bimodal pattern

Daily variation characterizes that black carbon has the bimodal pattern and the peak value appeared at 08:00~ 10:00 and 18:00~ 21:00, which is related closely to the local weather conditions and human activities.

日变化特征为，黑碳浓度呈双峰型分布，峰值分别出现在08：00～10：00和18：00～21：00，这与局地天气特征和人为活动有密切的关系。

As a rule, the female showed a bimodal daily activity pattern ( morning and evening) during the incubation stage.

研究表明：在孵化期，雌鸟的日活动节律呈现出双峰模式，即晨昏活动。

while hormone receptor did not change the bimodal pattern of mortality risk, the results showed that it was a time dependent variable.

激素受体状态虽不改变病人的双峰型复发模式，但却呈现出一定的时间依赖性。

The bimodal distribution curve of ABA contents in developing rice embryo was consistent with the biphasic pattern of the embryonal development.

发育中稻胚ABA含量的双峰曲线与胚的两阶段发育模式一致。